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What is the only reason to configure an IP address on a layer 2 Switch?
it is needed so hosts can locate the default gateway
So the ARP request can be forwarded between two hosts
So broadcast domain can be broken between interfaces
It is needed for in-band management
Switches are normally plug-n-play, meaning that they can connected to the power and they will start to build the MAC table. The main purpose of a L2 switch is in the layer 2 itself no layer 3 or IPs. The only purpose to configure an IP address on a L2 switch is to have in-band management such as access to the switch through Telnet, SSH, SNMP etc. In case we need to remotely log into the switch and configure it we can set an IP.
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